Bluetooth Amplifier Board, ZK-HT21 2.1 Channel 160W x 2+220W Subwoofer Amp | Stereo Mini Audio Power Amplifier Module TDA7498E HiFi Chips,BT USB AUX Input DC 15-36V for DIY Home Speakers
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Availability:
In Stock.
Arrives
Thursday, Sep 10
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Color: Black3 ZK-HT21
Features
- 2.1 CH Subwoofer Audio Amplifier Board This ZK-HT21 power amplifier is 2.1channel, allows you to connect 2 passive speakers and drive a subwoofer, comes with Treble and Bass buttons, independent subwoofer volume adjustment buttons and 20-200Hz subwoofer frequency adjustment buttons, which is very friendly for audiophiles, you can adjust the Treble and Bass buttons, make the bass more shocking and the treble clearer, make the sound more layered
- 160W*2 + 220W High Power Output This HT21 audio amplifier has 160W*2 output power for left and right channel and 220W output power for subwoofer, it can drive two high-power speakers (30-200W, 4-8 ohms) and one subwoofer (30-220W), and the adapted power supply is DC15-36V/8A or above. Note: The higher the power supply voltage/current, the higher the output power, the lower the speaker resistance, the higher the output power, the adapted power supply should higher than the actual working power of the amplifier
- HIFI Stereo Audio Power Amplifier The ZK-HT21 power amplifier board built-in two TPA7498E power amplifier chips, TPA7498E is a high-performance class D power amplifier chip, can make thedevice maintain ultra-low distortion in the whole audio frequency band and show high-definition sound quality at the same time. The wiring around the chip is an window tin spraying design to increase the output power. 4 x Low noise preamplifiers 5532 group can improve the sound quality and volume, increase the gain
- Multiple Audio Input Modes This Mini amplifier receiver built-in Bluetooth 5.0, USB flash disk, USB sound card and 3.5mm AUX Input. Bluetooth 5.0 mode, faster transmission speed, lossless decoding, lower distortion rate, connection distance to audio equipment is 15m/49ft. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected
- With Protective Function This Bluetooth Amp module is designed with multiple protection mechanisms, include over-voltage protection, under-voltage protection, over-heat protection, short-circuit protection, with case to protective it. Besides, There is a Long-life Ultra Silent Fan(locked rotor, no burning,no noise) above audio chips, for heat dissipation and protection of Bluetooth amplifier board
Description
Bluetooth Amplifier Board, ZK-HT21 2.1 Channel 160W x 2+220W Subwoofer Stereo Audio Power Amplifier Receiver Module TDA7498E HiFi Chips with Treble and Bass for Home Speakers
Manufacturer: DideaECO
Maximum Supply Voltage: 36 volts_of_direct_current
Minimum Supply Voltage: 15 volts_of_direct_current
Mounting Type: Freestanding
Brand: ARRAROWN
Maximum Supply Voltage: 36 volts_of_direct_current
Minimum Supply Voltage: 15 volts_of_direct_current
Mounting Type: Freestanding
Number of Channels: 3
Output Power: 540 watts
Maximum Output Power: 540 watts
Manufacturer: DideaECO
Model: ZK-HT21
Brand Name: ARRAROWN
Warranty Description: 2 Years warranty
Part Number: ZK-HT21
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Sep 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black3 ZK-HT21
Works amazing. I am pushing two Klipsch quintet speakers and an old Polk Audio 10" sub. I had to bypass the subs burnt out amp by connecting wires from the amp to the subwoofer directly. I also purchased a power supply that supplied the mini amp with 23 amps of power to run efficiently. Great little amp for the money. Looking at buying two more.
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Reviewed in the United States on June 6, 2026 by Art Gtz
Color: Black3 ZK-HT21
Amazing amp I can’t believe how powerful this amp is,I made a Bluetooth speaker and it made my ds18 loud, awesome quality I recommend this diy amp if your interested in making speaker or even if you want to connect some old speakers laying around
Reviewed in the United States on July 8, 2026 by Josbeth Betancourth
Color: Black3 ZK-HT21
Very impressive, great addition to my golf cart! It’s kinda weird that you have to assemble the top and bottom covers but very easy to do. Sounds great with four 6” speakers and 6”sub.
Reviewed in the United States on April 17, 2026 by Aaron Farr
Color: Black3 ZK-HT21
The unit does work very well. Stereo Output at 35Vdc is 60 watts RMS @8ohms, 120 watts rms @ 4Ohms per channel, as My scope showed with <0.5% Thd 1KHZ. Bass and Treeble controls are active and create a pleasant sound. You may have to tweek with them to get the sound you want. The sub bass also is adjustable. It took a little fine tuning to get the sound I wanted, but sounds great when I finished. Even though It did not make the rated 160 watts per channel, it does a very good job and is quite loud at 24Vdc. Very pleased with it and would recommend. One con I have, is does draw power with the switch off, so if you use battery be sure to disconnect your battery when not in use. Measured 35ma at 24 volts with power switch off. USB and Bluetooth worked without issues.
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Reviewed in the United States on July 25, 2025 by Tony Ledford
Color: Black3 ZK-HT21
Excelente producto
Reviewed in the United States on July 14, 2026 by Henry Pernia
Color: Black3 ZK-HT21
Great sound quality ,compact size
Reviewed in the United States on May 8, 2026 by Mario Chavez
Color: Black3 ZK-HT21
I will spare you the part numbers, but I have B&W towers, B&W theater, Mirage, Klipsch Reference, Infinity, Bohlinder Graebener, vintage Altek, Lansing, Mirage and B&W bookshelf speakers, as well as Yamaha and Pioneer Elite amplifiers. This little 'player' can join the party even without a tie and be the hit of it, thanks to high-speed switching technology and more advanced signal filtering. While early Class D designs were often criticized for "grainy" sound and harsh high frequencies, recent innovations in semiconductor materials and high-precision modules have allowed them to match or even exceed the fidelity of vintage and high-dollar 'audiophile' equipment. Sorry, but recorded this on my camera mic. on about 10% volume.
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Reviewed in the United States on March 2, 2026 by Eric Dee
Color: Black3 ZK-HT21
Stop playing through speakers with a month
Reviewed in the United States on October 5, 2025 by Julio Sanchez